GR 63 Series - .630" / 16mm - GR Mouthpieces

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GR 63 Series - .630" / 16mm

GR Mouthpieces > Trumpet
Quick Comparison - The GR 63 Series cup diameter is generally between a conventional 10 1/2 and 7 diameter.

Classic Blank is standard.  Studio, Symphonic, and FatBoy are available as a special order on some models.
Backbores, other than listed, are special orders.

Also available as a standard order:

Ask us about other 63 Series designs on file!
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